CN102072405A - Buried pipeline dynamic simulation leakage detection method, and application and simulation test system thereof - Google Patents
Buried pipeline dynamic simulation leakage detection method, and application and simulation test system thereof Download PDFInfo
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Abstract
The invention discloses a buried pipeline dynamic simulation leakage detection method, and application and a simulation test system thereof, aims to evaluate and determine a detection result of an unexcavated and non-stop buried pipeline by various kinds of detection technology, and can be applied to various kinds of new detection technology and new methods for researching leakage of the buried pipeline. The simulation test system is used for presetting leakage points on a tested pipeline; the pipeline is buried underground; the opening and closing of each leakage point of the tested pipeline is manually controlled; and the opened leakage point is the known leakage point. By determining the position of the leakage point of the tested pipeline and comparing the position with the detection results of other kinds of pipeline detection technology, the reliability of the detection technology of the method is evaluated for selection of a user. The test system comprises an operating table, a leakage point control device, the tested pipeline and a test source, wherein the tested pipeline is provided with leakage holes; the two ends of the pipeline are communicated with the test source respectively; and the leakage point control device is arranged on the leakage holes in the tested pipeline and is communicated with the operating table through a connecting pipeline.
Description
Technical field
The present invention relates to the calibration technology of buried pipeline Leak testtion, particularly buried pipeline dynamic simulation leakage detection method and application and simulation experiment system, the present invention is directed to various detection techniques to do not excavate, the testing result of stopping transportation buried pipeline is not estimated and is judged.And can be used for various detection new technologies, new method and detect, leak detected level and the leakage point Location accuracy quantitatively judges and studies for the buried pipeline defect point.As can be used for pipe detection technology such as air sampling method, electromagnetic methods, acoustic-emission, stray electrical current detection method, guided wave method, infrared measurement of temperature method, transient electromagnetic method are carried out the evaluation and the experimental study of on-the-spot testing result.
Background technique
At present, the pipe detection technology is varied, but its Applicable scope and inequality.The detection technique commonly used to buried pipeline has: air sampling method, electromagnetic methods, acoustic-emission, stray electrical current detection method, guided wave method, transient electromagnetic method etc.The air sampling method is to judge by detecting airborne detected gas concentration whether pipeline leaks.Electromagnetic methods is after pipeline leaks, and can cause that the surrounding environment dielectricity changes, and leaks the variation that the fluid that produces also can cause magnetic field and electric field, by detecting the electromagnetic change situation, can judge the leak position.Acoustic emission technique is exactly by monitoring or writes down generation and the development that this sound wave comes detection facility the above-mentioned type corrosion damage, and determines their position.The stray electrical current detection method is to detect stray electrical current to determine that stray electrical current flows out the position and is the pipeline anticorrosion coating breaking point, and this technology can detect petroleum pipeline external anti-corrosion layer breaking point, pipe body corrosion leakage point.The guided wave method is to settle array-type ultrasonics to send out-receive assembly along pipe ring to 360 °, excites the supersonic guide-wave of a certain frequency that it is propagated to two ends along pipeline, the cutoff frequency of guided wave and caliber, wall thickness, material and to manage the propagation characteristic of inside and outside medium relevant.Transient electromagnetic method is to determine the corrosion location and extent of corrosion is made judgement by the variation position of pipeline physical property due to the detection corrosion and degree of variation.Though detection technique is many, buried underground because of producing pipeline, actual detection result is difficult to judge, selects in the face of numerous detection technique enterprises is difficult to make use.Under the condition of prior art, adaptive evaluation can only rely on technician's experience to various detection techniques, by a large amount of detection practices, gropes to select adaptable detection technique to be applied.If but in actual detected work, could not select suitable detection technique, problems such as detection efficiency is low, testing precision difference will be caused.Therefore at the detection of a certain concrete pipeline, how correctly to select one or more detection techniques to seem particularly important.
Summary of the invention
Purpose of the present invention just provides buried pipeline dynamic simulation leakage detection method and application and simulation experiment system, determines the applicability and the Location accuracy of various pipe detection technology by medium, position and the degree of the leakage of control buried pipeline.For enterprise provides the detection evaluation of various detection techniques, with reference to selection, also, various detection techniques study help simultaneously for providing for enterprise.
The object of the present invention is achieved like this:
Buried pipeline dynamic simulation leakage detection method is to use simulation experiment system, to the default leakage point of test pipe, imbed underground, the keying of each leakage point of manual control test pipe, the leakage point of being opened is the known leak point.
The application aborning of buried pipeline dynamic simulation leakage detection method, the leakage point position of at first using buried pipeline dynamic simulation leakage detection method confirmed test pipeline; The test pipe of simulation experiment system being controlled with other pipe detection technology detects again, seeks the leakage point position of its test pipe; Leakage point position that simulation experiment system is definite and character are estimated the reliability of its used pipe detection technology in contrast.
The simulation experiment system that is used for buried pipeline dynamic simulation leakage detection method comprises operating table, leak source control gear, test pipe and test pill, and test pipe is provided with Leak hole, and the two ends of pipeline are communicated with test pill respectively; The leak source control gear is installed on the interior Leak hole of test pipe, is communicated with operating table by connecting line.
The present invention has following significant effect and progress:
1. simulation experiment system of the present invention, set the leakage point in different apertures around the different parts of test pipe, make a test pipe have different leakinesses, leak position and leakage way, realize judge multiple leakage rate, leak position and leakage way testing result.
2. according to the difference of oil, gas, the common leak position of water, can distinguish the leakage of simulated oil, gas, three kinds of media of water, investigating the adaptability that various technology detect three kinds of dielectric leakages, and can be respectively the scheme that provides of selecting for use of oil, gas, waterpipe leak detection technology.
3. the present invention is at the outer wall of a test pipe, and different anticorrosive coats is used in segmentation, can investigate the influence of present oil field and line transportation industry two kinds of external anti-corrosion layers of pitch, foam yellow jacket commonly used to the Leak testtion result.
4. the prefabricated adjacent Leak hole of test pipe utilizes pneumatic actuator to realize the keying control that Leak hole is independent, and the positioning control of leak source is accomplished in the influence that can avoid adjacent Leak hole that indivedual detection techniques are implemented.
5. the simulation experiment system among the present invention can be built the test place separately, also can utilize construction test place, oil-gas gathering and transportation station, can utilize and produce pipeline as test pill.In the test pipe periphery recovery pond is set and in time reclaims leakage crude oil, both reduced input cost, also avoided environmental pollution.
The present invention can satisfy the function that various detection techniques are tested, and specifically comprises: guided wave method, sonic method, electromagnetic methods, gas leakage detection method, transient electromagnetic detection method etc.Can satisfy the collection of the detection data of different situations, data have comparative, find out the rule that detects between data and leakage situation, realize by qualitative comprehensive analysis to the technological break-through of quantitatively accurately judging, for the detection present situation of various buried pipeline detection techniques is made real evaluation.
Description of drawings
Fig. 1 is the structural representation of test pipe of the present invention.
Fig. 2 is a fundamental diagram of the present invention.
Fig. 3 is the structural representation of leak source control gear of the present invention.
Embodiment
Describe buried pipeline dynamic simulation leakage detection method provided by the present invention and application and simulation experiment system in detail below in conjunction with accompanying drawing.Buried pipeline dynamic simulation leakage detection method is to use simulation experiment system, to the default leakage point of test pipe, imbed underground, the keying of each leakage point of manual control test pipe, the leakage point of being opened is the known leak point.To the application aborning of buried pipeline dynamic simulation leakage detection method, at first use the leakage point position of buried pipeline dynamic simulation leakage detection method confirmed test pipeline; The test pipe of simulation experiment system being controlled with other pipe detection technology detects again, seeks the leakage point position of its test pipe; Leakage point position that simulation experiment system is definite and character are estimated the reliability of its used pipe detection technology in contrast.Referring to Fig. 1, Fig. 2 and Fig. 3, the simulation experiment system of buried pipeline dynamic simulation leakage detection method comprises operating table 3, leak source control gear 7, test pipe 2 and test pill 6, and test pipe 2 is provided with Leak hole 1, and the two ends of pipeline are communicated with test pill 6 respectively; Leak source control gear 7 is installed on the Leak hole 1 in the test pipe 2, is communicated with operating table 3 by connecting line.Test pill 6 can utilize the production pipeline of oil, gas, water to set up, to reducing the construction costs, and also can be newly-built.Leak source control gear 7 comprises pneumatic actuator 8 and leak control valve 14, leak control valve 14 is fixed on the inwall of test pipe 2; Pneumatic actuator 8 is communicated with operating table 3 by connecting line, and its control spool is installed in the leak control valve 14, cooperates with the valve seat 16 of leak control valve 14.The control spool of pneumatic actuator 8 comprises controlling rod 9 and spool 10, and spool 10 places the bottom of controlling rod 9, and controlling rod 9 is communicated with the Pneumatic controlled box of pneumatic actuator 8.Leak control valve 14 comprises upper shell and base 18, on the body wall of upper shell, be provided with pod apertures 15, test(ing) medium in the test pill 16 is exactly to flow into leak control valve 14 from this hole, be provided with valve seat 16 and liquid outlet opening 17 and vent on its base 18, it is corresponding with Leak hole 1 on the test pipe 2 that liquid outlet opening 17 is positioned at the central authorities of valve seat 16; Valve seat 16 is cone bosses, is provided with Sealing at the top of its cone boss; The vent two ends are connected with suction tude 12 with outlet pipe 11 by pipe joint 13 respectively, and guarantee its sealing.Base 18 lower ends lead to operating table 13 by outlet pipe 11 and suction tude 12 that pipe joint 13 connects.Base 18 is fixed on the inwall of test pipe 2, can be that screw is fixed, riveting fixed or welding.Test pipe 2 sectionals are provided with different anticorrosive coats, in the periphery of test pipe 2 recovery pond are set; With Leak hole 1 on test pipe 2 around setting, does not wait in its aperture.Preferably at interval 2 meters of the distances that axially goes up adjacent Leak hole 1, the influence when avoiding indivedual detection techniques are implemented.Connecting line comprises outlet pipe 11 and suction tude 12, and each leak source control gear 7 all is provided with an outlet pipe 11 and a suction tude 12, each bar outlet pipe 11 and suction tude 12 is fixed in the connecting tube be connected with operating table 3.Operating table 3 is provided with exhaust Joystick and air inlet Joystick, respectively with connecting tube in each bar outlet pipe 11 be connected with suction tude 12.Difference installation and control valve 4 and 5 between test pill 6 and test pipe 2 is with the derivation and the importing of control test(ing) medium.
When using native system to do leakage test, operation as follows:
Leak and operate:
Open control valve 4, test(ing) medium enters test pipe 2 through test pill 6, is leaked by the some leak source control gear 7 of operating table 3 controls.Gas carries out pneumatic compression through 12 pairs of pneumatic actuators 8 of suction tude.Utilize air pressure that controlling rod 9 is moved up, open leak control valve 14, test(ing) medium enters liquid outlet opening 17 through pod apertures 15.Because liquid outlet opening 17 and Leak hole 1 corresponding setting flow out the Leak hole 1 of test(ing) medium from test pipe 2, reveal and take place.
Leak shut-down operation:
Operating table 3 control outlet pipes 11 are discharged gas, stop the inflation pressurization, and pneumatic actuator 8 push levers 9 move down, and close leak control valve 14, and test(ing) medium stops to leak.
Leakage by native system is operated, and draws known leakage point position, the test(ing) medium and the flow of outflow, and the leak detection technology with other comes the leakage that native system has taken place is detected again, with the actual leakage generation data contrast of native system.Estimate accurate positioning, the Location accuracy that various buried pipeline detection techniques, detection facility detect key element for the leakage point of buried pipeline, external anti-corrosion layer breaking point, stolen clamp set-point, stolen take-off line set-point etc. and judge, can estimate its detection efficiency simultaneously.
After buried pipeline leaks simulation experiment system and builds up, can be in the oil field, the line transportation industry simulates various practical problems, by the leak condition of control test pipe 2, according to the test requirements document signal that zooms in or out, to reach the purpose of passing judgment on various detecting methods.
Claims (10)
1. buried pipeline dynamic simulation leakage detection method uses simulation experiment system, to the default leakage point of test pipe, imbed underground, the keying of each leakage point of manual control test pipe, the leakage point of being opened is the known leak point.
2. for the application of claim 1 buried pipeline dynamic simulation leakage detection method, at first use the leakage point position of buried pipeline dynamic simulation leakage detection method confirmed test pipeline; The test pipe of simulation experiment system being controlled with other pipe detection technology detects again, seeks the leakage point position of its test pipe; Leakage point position that simulation experiment system is definite and character are estimated the reliability of its used pipe detection technology in contrast.
3. the simulation experiment system that is used for claim 1 buried pipeline dynamic simulation leakage detection method, it is characterized in that native system comprises operating table (3), leak source control gear (7), test pipe (2) and test pill (6), test pipe (2) is provided with Leak hole (1), and the two ends of pipeline are communicated with test pill (6) respectively; Leak source control gear (7) is installed on the Leak hole (1) in the test pipe 2, is communicated with operating table (3) by connecting line.
4. simulation experiment system according to claim 3 is characterized in that leak source control gear (7) comprises pneumatic actuator (8) and leak control valve (14), is fixed on leak control valve (14) inwall of test pipe (2); Pneumatic actuator (8) is communicated with operating table (3) by connecting line, and its control spool is installed in the leak control valve (14), cooperates with the valve seat (16) of leak control valve (14).
5. simulation experiment system according to claim 4, the control spool that it is characterized in that pneumatic actuator (8) comprises controlling rod (9) and spool (10), spool (10) places the bottom of controlling rod (9), and controlling rod (9) is communicated with the Pneumatic controlled box of pneumatic actuator (8).
6. simulation experiment system according to claim 4, it is characterized in that leak control valve (14) comprises upper shell and base (18), on the body wall of upper shell, be provided with pod apertures (15), be provided with valve seat (16) and liquid outlet opening (17) and vent on its base (18), it is corresponding with Leak hole (1) on the test pipe (2) that liquid outlet opening (17) is positioned at the central authorities of valve seat (16); Valve seat (16) is a cone boss, is provided with Sealing at the top of its cone boss; The vent two ends are connected with suction tude (12) with outlet pipe (11) by pipe joint (13) respectively.
7. simulation experiment system according to claim 3 is characterized in that described test pipe (2) sectional is provided with different anticorrosive coats, in the periphery of test pipe (2) recovery pond is set; Leak hole (1) is gone up around setting at test pipe (2), and does not wait in its aperture.
8. according to claim 3 or 4 described simulation experiment systems, it is characterized in that connecting line comprises outlet pipe (11) and suction tude (12), each leak source control gear (7) all is provided with an outlet pipe (11) and a suction tude (12), each bar outlet pipe (11) and suction tude (12) is fixed in the connecting tube be connected with each leak source control gear (7) and operating table (3).
9. simulation experiment system according to claim 3 is characterized in that operating table (3) is provided with exhaust Joystick and air inlet Joystick, respectively with connecting tube in each bar outlet pipe (11) be connected with suction tude (12).
10. simulation experiment system according to claim 3 is characterized in that difference installation and control valve (4) and (5) between test pill (6) and test pipe (2).
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102679166A (en) * | 2012-05-21 | 2012-09-19 | 宁波钢铁有限公司 | Method for quickly checking leakage and determining leakage section and leakage amount of buried water supply pipe network |
| CN103063738A (en) * | 2012-12-19 | 2013-04-24 | 上海市特种设备监督检验技术研究院 | Detecting method of outer anti-corrosion layer of buried fuel gas steel pipeline |
| CN103486443A (en) * | 2013-10-15 | 2014-01-01 | 东北石油大学 | Oil and gas leakage detection simulation test system |
| CN103527934A (en) * | 2013-10-29 | 2014-01-22 | 中国石油化工股份有限公司 | Pipeline leakage test set and method |
| CN103644459A (en) * | 2013-12-10 | 2014-03-19 | 苏州苏净保护气氛有限公司 | Monitoring and alarming system and method for buried gas pipeline leakage |
| CN103727395A (en) * | 2013-12-20 | 2014-04-16 | 上海波汇通信科技有限公司 | Simulation system for simulative on medium leakage in pipelines |
| CN104535281A (en) * | 2015-01-15 | 2015-04-22 | 中国石油大学(华东) | Airport apron pipe network impermeability testing device and method based on pressure correlation method |
| CN104880289A (en) * | 2015-02-16 | 2015-09-02 | 中交第二航务工程局有限公司 | Immersed tube sealing test system |
| CN106128262A (en) * | 2016-06-08 | 2016-11-16 | 重庆科技学院 | A kind of oil and gas pipes defects detection and monitoring experiment porch |
| CN107816638A (en) * | 2017-11-10 | 2018-03-20 | 中国石油大学(华东) | A kind of experimental provision and method suitable for buried gas pipe leakage measurement |
| CN109268690A (en) * | 2018-10-29 | 2019-01-25 | 张�浩 | One kind being used for gas pipeline leakage detection device |
| CN111947849A (en) * | 2020-09-02 | 2020-11-17 | 中国科学院合肥物质科学研究院 | Pipeline detection system based on guided wave detection |
| CN112880924A (en) * | 2021-01-12 | 2021-06-01 | 同济大学 | Leakage point simulation system for water supply pipeline |
| CN113295343A (en) * | 2021-04-21 | 2021-08-24 | 国核电站运行服务技术有限公司 | Container leak detection process test device and method |
| CN115656445A (en) * | 2022-11-11 | 2023-01-31 | 江苏省特种设备安全监督检验研究院 | Test method for detecting typical defects of directly-buried jacket steam pipeline |
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Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102679166A (en) * | 2012-05-21 | 2012-09-19 | 宁波钢铁有限公司 | Method for quickly checking leakage and determining leakage section and leakage amount of buried water supply pipe network |
| CN102679166B (en) * | 2012-05-21 | 2015-08-05 | 宁波钢铁有限公司 | The method that the quick leakage-checking spacing of buried water supply pipe net is quantitative |
| CN103063738A (en) * | 2012-12-19 | 2013-04-24 | 上海市特种设备监督检验技术研究院 | Detecting method of outer anti-corrosion layer of buried fuel gas steel pipeline |
| CN103486443A (en) * | 2013-10-15 | 2014-01-01 | 东北石油大学 | Oil and gas leakage detection simulation test system |
| CN103486443B (en) * | 2013-10-15 | 2015-11-25 | 东北石油大学 | A kind of oil and gas leakage detects experimental system for simulating |
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| CN103644459B (en) * | 2013-12-10 | 2016-03-02 | 苏州苏净保护气氛有限公司 | Steel gas pipe underground leakage monitoring alarm system and method |
| CN103644459A (en) * | 2013-12-10 | 2014-03-19 | 苏州苏净保护气氛有限公司 | Monitoring and alarming system and method for buried gas pipeline leakage |
| CN103727395A (en) * | 2013-12-20 | 2014-04-16 | 上海波汇通信科技有限公司 | Simulation system for simulative on medium leakage in pipelines |
| CN103727395B (en) * | 2013-12-20 | 2016-06-08 | 上海波汇科技股份有限公司 | A kind of simulation system of carrying out analog detection that pipeline internal medium is leaked |
| CN104535281A (en) * | 2015-01-15 | 2015-04-22 | 中国石油大学(华东) | Airport apron pipe network impermeability testing device and method based on pressure correlation method |
| CN104535281B (en) * | 2015-01-15 | 2015-10-14 | 中国石油大学(华东) | Machine level ground closed pipeline system safety testing device based on pressure correlation method carries out the method for testing |
| CN104880289A (en) * | 2015-02-16 | 2015-09-02 | 中交第二航务工程局有限公司 | Immersed tube sealing test system |
| CN106128262A (en) * | 2016-06-08 | 2016-11-16 | 重庆科技学院 | A kind of oil and gas pipes defects detection and monitoring experiment porch |
| CN106128262B (en) * | 2016-06-08 | 2019-01-22 | 重庆科技学院 | A kind of oil-gas pipeline defects detection and monitoring experiment porch |
| CN107816638A (en) * | 2017-11-10 | 2018-03-20 | 中国石油大学(华东) | A kind of experimental provision and method suitable for buried gas pipe leakage measurement |
| CN109268690A (en) * | 2018-10-29 | 2019-01-25 | 张�浩 | One kind being used for gas pipeline leakage detection device |
| CN111947849A (en) * | 2020-09-02 | 2020-11-17 | 中国科学院合肥物质科学研究院 | Pipeline detection system based on guided wave detection |
| CN111947849B (en) * | 2020-09-02 | 2024-06-11 | 中国科学院合肥物质科学研究院 | Pipeline detecting system based on guided wave detection |
| CN112880924A (en) * | 2021-01-12 | 2021-06-01 | 同济大学 | Leakage point simulation system for water supply pipeline |
| CN113295343A (en) * | 2021-04-21 | 2021-08-24 | 国核电站运行服务技术有限公司 | Container leak detection process test device and method |
| CN113295343B (en) * | 2021-04-21 | 2024-02-20 | 国核电站运行服务技术有限公司 | Container leak detection process test device and method |
| CN115656445A (en) * | 2022-11-11 | 2023-01-31 | 江苏省特种设备安全监督检验研究院 | Test method for detecting typical defects of directly-buried jacket steam pipeline |
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Application publication date: 20110525 |